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Spongin, a modified type of collagen protein, forms the fibrous skeleton of most organisms among the phylum Porifera, the sponges. It is secreted by sponge cells known as spongocytes.[1]
Spongin gives a sponge its flexibility. True spongin is found only in members of the class Demospongiae.[2]
^Anderson, D. (2001). Invertebrate Zoology. Oxford University Press.
^Brusca, R.; Brusca, G. (2003). Invertebrate Zoology. Sinauer Associates. p. 191.
spongocytes. Spongin gives a sponge its flexibility. True spongin is found only in members of the class Demospongiae. Researchers have found spongin to be useful...
(skeletal-like fragments of calcium carbonate or silicon dioxide), and/or spongin (a modified type of collagen protein). An internal gelatinous matrix called...
Their "skeletons" are made of spicules consisting of fibers of the protein spongin, the mineral silica, or both. Where spicules of silica are present, they...
motile bacterium from the genus of Aquimarina which has been isolated from spongin. "Aquimarina". LPSN. "Aquimarina spongiicola". www.uniprot.org. Choi, KD;...
"skeleton" consists of microscopic calcareous or siliceous spicules or a spongin network. The Coleoidea do not have a true endoskeleton in the evolutionary...
the family Grantiidae. Species of the genus Grantia contain spicules and spongin fibers. The genus contains bioluminescent species. Grantia aculeata Urban...
within the phylum Porifera. The "skeleton" in these sponges is made up of spongin, rather than of spicules. They live in marine environments. The name was...
differ. Among the class Demospongiae, skeletons are formed mainly of spongin. Spongin is the main component that makes up the sponge skeleton. While sponges...
thought to be, at least in part, because their spicules are sturdier than spongin and fossilize better. Like almost all sponges, the hexactinellids draw...
Their "skeletons" are made of spicules consisting of fibers of the protein spongin, the mineral silica, or both. Where spicules of silica are present, they...
skeleton is minimal or absent and a skeleton of organic fibers containing spongin, a collagen-like material, is present instead. Wikimedia Commons has media...
are generally characterized by concentric layers of fibers containing spongin (a collagen-like material), and by large flagellated chambers that open...
branch consisted of a network of strands. Vauxia also had a skeleton of spongin (flexible organic material) common to modern day sponges. Much like Choia...
increased urinary levels are associated with the extent of renal injury. Spongin, a variant of this collagen type found in some animals Boute N, Exposito...
of spongin and inclusions such as sand grains and spicules. The secondary fibers are 20 to 35 nanometers in diameter and are composed of only spongin without...
through a hole called the osculum. Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silicon dioxide. All sponges are...
sponges in this class have skeletons made from silicon-containing spicules, spongin fibers, or both. Demosponges include both marine and freshwater sponges...
today. Bath sponges can be defined as any sponge species possessing only spongin fibers – which are springy fibres made from collagen protein. Commercial...
through a hole called the osculum. Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silicon dioxide. All sponges are...
calcareous or siliceous. Siliceous spicules are sometimes embedded in spongin. Spicules are found in a range of symmetry types. Monaxons form simple...
estate. Grafarvogur currently has one medium-sized shopping centre called Spöngin. It's not a mall in itself but a cluster of stores, Hagkaup being the largest...
that had a distinctive branching mode of growth. Vauxia had a skeleton of spongin (flexible organic material) common to modern day sponges. Much like Choia...
detailed structure of chancellorid sclerites is similar to that of fibers of spongin, a collagen protein, in modern keratose (horny) demosponges. However Janussen...
Demosponges appear: form first skeletons of spicules made from protein spongin and silica – brightly coloured these colonial creatures filter feed since...
detailed structure of chancellorid sclerites is similar to that of fibers of spongin, a collagen protein, in modern keratose (horny) demosponges such as Darwinella...
called megascleres. Spicule can be calcareous, siliceous, or composed of spongin. They are found in a range of symmetry types. Sediments at the bottom of...
or exceptionally 50 metres (160 ft). Some authorities report that the spongin fibres contain no coring spicules while others report that there are some...
secreting a kind of skeleton for supporting the sponge's body, formed of spongin fibers. As its name suggests, the most common color is blue, but individuals...
not necessarily have spicules and instead may depend on a collagenous spongin and chitin skeleton for support. This sponge is covered in tiny oscules...
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